Micromod Micro-DCI: 53SL6000 Single Loop Controller Bedienungsanleitung PDF herunterladen (Seite 62)

Table 7-1. Control Signal Descriptions

Signal Description

SPtS

Setpoint Track Status

For the SnGL, cASc, L.LiM, and h.LiM

control schemes, SPtS selects the StV

value to be used for the setpoint, thus

bypassing the remote setpoint and

setpoint push button values.

The value of StV follows the A input when

process variable tracking (PVt) is

selected; otherwise, it is a fixed

configurable value.

The setpoint slew rate (SSr) and the

setpoint high and low limit (sh, sL)

paramerters are applied.

When the SPtS signal is active, it is

indicated with a flashing local LED.

The SPtS signal is also available as a

digital output from the control scheme

block. The SPtS signal is simply the inverse

value of the L input when there is no

process variable track.

When process variable tracking is

selected, SPtS is active whenever oVtS is

active or when Aut is not active.

SPtS.2

Septoint Track Status (Loop 2)

For cASc, L.LiM, and h.LiM control

schemes when process variable tracking

(PVt.2) is selected for the primary (cASc)

or limiting (L/h.LiM) loop (loop 2), SPtS.2

selects the B input as the setpoint value

for the primary/limiting loop instead of

the loop 2 setpoint push buttons.

SPtS.2 is simply the inverse of Aut.2 with

the L.Lim and h.LiM control schemes.

For the cASc control scheme, SPtS.2 is

active whenever the primary loop is not

controlling the setpoint of the secondary

loop (loop 1), or whenever the primary

loop is not in automatic operating mode.

When the SPtS.2 signal is active, it is

indicated with a flashing loop 2 local LED.

SPtS.2 does not apply to the SnGL or the

in.Ld control schemes or when process

variable tracking (PVt.2) is not active in

loop 2, in which case it is forced to an

inactive value.

53SL6000 Instruction Manual Section 7. Control Scheme Block

7-4

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